chore(deps): update reqwest requirement in /veza-chat-server

Updates the requirements on [reqwest](https://github.com/seanmonstar/reqwest) to permit the latest version.
- [Release notes](https://github.com/seanmonstar/reqwest/releases)
- [Changelog](https://github.com/seanmonstar/reqwest/blob/master/CHANGELOG.md)
- [Commits](https://github.com/seanmonstar/reqwest/compare/v0.11.0...v0.12.28)

---
updated-dependencies:
- dependency-name: reqwest
  dependency-version: 0.12.28
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

veza-chat-server/Cargo.toml

@@ -153,7 +153,7 @@ lapin = "2.3"
 # INTÉGRATIONS EXTERNES (OPTIONAL)
 # ═══════════════════════════════════════════════════════════════════════
 lettre = { version = "0.11", features = ["tokio1-native-tls"], optional = true } # Envoi d'emails
-reqwest = { version = "0.11", features = ["json", "rustls-tls"], optional = true } # Client HTTP
+reqwest = { version = "0.13", features = ["json", "rustls-tls"], optional = true } # Client HTTP
 webhook = { version = "2.1", optional = true }                 # Webhooks sortants
 sysinfo = "0.37.2"